I once tried to customize a rich text editor to support SVG text effects (like https://www.smashingmagazine.com/2015/05/why-the-svg-filter-...) and damn near lost my mind.

If I had known that you can write an entire book on just text layout I wouldn't have bothered: https://www.oreilly.com/library/view/svg-text-layout/9781491...